Internal combustion engine
OwnerClyde C. Bryantinventor
Life of this patent
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Abstract
The invention is concerned with a method of deriving mechanical work from a combustion gas in an internal combustion engine and reciprocating internal combustion engines for carrying out the method. The method includes the steps of compressing an air charge in a compressor of the engine, transferring the compressed charge to a power chamber of the engine such that no appreciable drop in charge pressure occurs during transfer and admission to the power chamber, causing a predetermined quantity to produce a combustible mixture, causing the mixture to be ignited at substantially maximum pressure within the power chamber and allowing the combustion gas to expand against a piston operable in the power chamber substantially beyond its initial volume.
Claims20
A method of deriving mechanical work from combustion gas in an internal combustion engine having at least two two-stroke power chambers in which combustion gases are ignited and expanded, and a piston operable in each chamber, and a compressor in which an air charge is compressed, comprising the steps of compressing an air charge in a compressor, transferring the compressed air charge to each power cylinder at such time as the piston in the power cylinder is near top dead center with the total combustion volume of the power cylinder being no greater than the volume of the charge transferred from the compressor at the time of transfer such that there is no appreciable pressure drop during transfer, causing a predetermined quantity of fuel to be mixed with the air charge to produce a combustible mixture with combustion beginning before or at top dead center, causing the mixture to be ignited at substantially maximum pressure within each power chamber and expanding the combustion gas against the piston substantially beyond its initial volume, with combustion in each power cylinder occurring on alternate strokes of the pistons with scavenging by the piston occurring on alternate strokes by positive displacement of the burned gases.
A method of deriving mechanical work from combustion gas in an internal combustion engine having a two stroke power chamber in which the combustion gas is ignited and expanded, a compressor chamber in which an air charge is compressed and a piston operable in each chamber, comprising the steps of compressing an air charge in the compressor chamber, transferring the compressed air charge to the power chamber with the total combustion chamber volume of the power chamber being no greater than the volume of the charge transferred from the compressor chamber at the time of transfer such that there is no appreciable pressure drop during transfer, causing a predetermined quantity of fuel to be mixed with the air charge to produce a combustible mixture, causing the mixture to be ignited at substantially maximum pressure within the power chamber and expanding the combustion gas against the piston substantially beyond its initial volume.
A reciprocating internal combustion engine comprising a compressor chamber for compressing an air charge, a power chamber in which the combustion gas is ignited and expanded, a piston operable in each chamber and connected to a common crankshaft by connecting link means for rotating the crankshaft in response to reciprocation of each piston, a transfer duct communicating the compressor chamber with the power chamber through which duct the compressed charge is transferred to enter the power chamber, an intake valve controlling admission of air to said compressor chamber for compression, a transfer valve controlling admission of the compressed charge to said transfer duct, an intake valve controlling admission of the compressed air charge from the transfer duct to said power chamber, and an exhaust valve controlling discharge of the exhaust gases from the power chamber, said valves being timed to operate such that the air charge is maintained within the transfer duct and introduced into the power chamber without any appreciable drop in charge pressure so that ignition can commence at substantially maximum compression, means being provided for causing fuel to be mixed with the air charge to produce the combustible gas, and wherein said compressor chamber and the combustion chamber of said power chamber are sized with respect to the displaced volume of said power chamber with the total combustion chamber volume of the power chamber being no greater than the volume of the charge transferred from the compressor chamber at the time of transfer such that the exploded combustion gas can be expanded substantially beyond its initial volume when transferred to the power chamber.
Dependencies are inferred from the claim text.